【题目】Those who can achieve high grades in class tend to be weak in handling some practical problems, ________ is often the case.
A. which B. as C. it D. That
在线课程【答案】B
【解析】
试题分析：考查关系词。句意：那些能在课堂上取得高分的人，往往在解决生活实际问题时很弱，这是常有的事情。as is often the case这是常有的事情，固定搭配，故选B项。